摘要
冠长率是衡量树冠大小的数量指标 ,同时又是影响树木生长的重要因素。研究结果表明 ,冠长率与树木直径、材积相关关系非常紧密 ,其相关指数均达 0 .9以上 。
The rate of crown length is a quantity index for weighing the size of a tree crown, meanwhile,it is a important factor to affct the the growth of a tree. The study result indicates that the rate of crown length has a very compact correlativity to the diameter and volume of a tree, the correlation indices all above 0.9; besides, the rate of crown length has bigger affect on lower diameter than upside diameter.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2002年第z1期149-150,共2页
Journal of Hebei Agricultural University
关键词
冠长率
直径
材积
rate of crown length
diameter
volume
